Reaming attachment for pipe-cutters.



No. 802,512. PATENTED OCT. 24, 1905. J. B. HUNTER, J. R. RAHISER & E. BARKEY. REAMING ATTACHMENT FOR PIPE GUTTERS.

APPLICATION FILED JUNE 21. 1905.

2 SHEETS-SHEET l.

w lmllm Wibmaoaeo No. 802,512. PATENTED OCT. 24, 1905. J. E. HUNTER, J. R. RAHISER 82; E. BARKBY.

RBAMING ATTACHMENT FOR PIPE GUTTERS.

APPLICATION FILED JUNE 21,1905.

2 SHEETS-SHEET 2.

Fi E.

' anueufom.

at m

W at @fMQ JOHN E.

HUNTER, JOSEPH R. RAHISER, AND ENOS BARKEY, OF EVANS CITY, PENNSYLVANIA.

REAWIIING ATTACHMENT FOR PlPE-CUTTERS.

Specification of Letters Patent.

Patented Oct. 24, 1905.

Application filed June 21,1905- Serial No. 266,307.

To (tZ/I when 1 71210.7 concern:

Be it known that we, JOHN E. HUNTER, Jo SEPH R. RAnIsnR, and Enos BARKEY, citizens of the United States, residing at Evans City, in the county of Butler,State of Pennsylvania, have invented certain new and useful Improvements in Reaming Attachments for Pipe-Cutters; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to pipe-cutting ma- .chines, and more particularly to attachments therefor, and has for its object to provide an attachment for smoothing the inside surface of cut pipe, the attachment being arranged to take the place of the cut-off-block cap of the machine.

Another object is to provide an attachment of this kind which will be extremely simple and which may consequently be manufactured at a low figure.

Other objects and advantages will be apparent from the following specification, which describes an embodiment of the present invention.

In the drawings forming a portion of this specification, and in which like numerals of reference indicate similar parts in the several views, Figure 1 is afront view of the die-head of a pipe-cutting machine, the present invention being shown thereupon. Fig. 21s atop plan view of the complete machine, the present invention being shown in use. Fig. 3 is a detail perspective view of the present invention removed from the machine. Fig. 4C is a side elevation of a portion of the machine, showing the present attachment in use.

Referring now to the drawings, there is shown a pipe-cutting machine 5, including a frame 6, at one end of which there is a revolving head-stock 7, the frame 6 including a bed upon which there is mounted a carriage 8, slidable to ward and away from the head-stock. The carriage 8 carries a die-head 9, provided with removable thread-cutting jaws 10, and mounted in the carriage inwardly of the head 9 there is a transverse guide 11, upon which there is slidably mounted a cut-off block 12, having a longitudinal recess 13 in its upper face, which extends transversely of the, frame 6, and removably disposed in this recess there is a cut-off knife 14, which is directed inwardly and which is adapted for engagement of its cutting end with a pipe engaged in the head-stock 7, a hand-screw 15 being connected with the block 12 for movement of the latter into the desired position.

In the place of the usual cutoff-block cap the present attachment (indicated at 16) is disposed upon the cut-off block and closes the upper side of the recess 13. This attachment comprises an elongated plate, having openings 17 adjacent to its ends, in which the usual attaching-bolts 18 are received, and at the side of the plate which is directed toward the head-stock 7 lingers 19 are formed at its ends and extend in the direction of the head-stock. The inner faces of these fingers are beveled toward their free ends and are also beveled oppositely from the upper to the lower faces of the fingers to form inwardly-directed cutting edges 20 and 20, respectively, the former lying at the upper and the latter at the lower face of the plate. The adjacent side edge 21 of the plate is also beveled adjacent to the fingers, as shown at 22 and 23, these bevels meeting the inner ends of the beveled inner faces of the fingers, so that these bevels 22 and 23 are directed one upwardly and one downwardly when the plate is in position. It Will thus be'seen that after a pipe has been cut the cut-off block 12 may be moved to bring the finger 19, lying at the inner end of the attachment, into the end of the section of pipe held in the head-stock 7 and to bring the cutting edge of this finger against the roughened inner surface of the pipe, when the rotation of the pipe will cause this cutting edge to smooth the pipe. After one of the cutting edges has been dulled, the attachment may be shifted end for end to bring the other finger into operative position.

What is claimed is 1. The combination in a pipe-cutting machine including a cut-off block having a recess in its top adapted for the reception of a tool, of a plate disposed upon the cut-off block to close the recess, said plate having fingers thereon provided with cutting edges.

2. The combination in a pipe-cutting machine including a pipe-receiving stock and a shiftable cut-off block having a tool-receiving recess therein, of a plate secured upon the block to cover the recess, said plate having fingers at its opposite ends provided with oppositely-disposed cutting edges said plate be openings therein adapted for the reception of the securing-screws of a cut-off block.

4. An attachment of the class described comprising a plate having openings therein adapted for the reception of attaching devices and having fingers extending from one of its side edges, said fingers lying in spaced relation and having inwardlydirected cutting edges 10- lated at opposite faces of the plate.

In testimony whereof We afiiX our signatures in presence of tWo Witnesses.

JOHN E. HUNTER. JOSEPH R. RAHISER. ENOS BARKEY.

W'itnesses:

RALPH R. RAHIsER, CLARA B. BARKEY. 

